in 2025 Which project does not have any good open-source alternatives?

Printers

- https://theoatmeal.com/comics/printers

- https://wiki.rossmanngroup.com/wiki/HP_Inc.

- https://wiki.rossmanngroup.com/wiki/Brother_ink_lockout_%26_...

# Apple Preview App

There is no such thing that can display, combine, annotate and export images and pdfs in such an elegant drag and drop way. It's just so useful and quick, there is no competition.

Jira.

For Confluence, Bookstack is close. But for Jira everything else is just so miserably bad in comparison.

Is there a good to do list app?

I'm thinking of forking one to run it through some LLMs (e.g. shopping list), but I haven't found any I'm happy with. I might just open source one myself if that's the case.

Paint.net. There's GIMP and Krita which are significantly more complex, and Pinta is wildly unstable in my experience (plus missing some important features). Paint.net perfectly hits that balance between complexity and ease of use for my purposes, and is the only piece of software I really miss from Windows.

Dropbox server implementation. Has a great open source MacOS client, but the server implementation is needed. I would contribute financially towards such a project, as Dropbox will never be satisfied to remain reliable file sync (and I am currently a paying customer). They keep churning features to expand the TAM. This will eventually lead to enshittification. Underlying storage could be any S3 compatible target. Each file could be an object, stretch goal would be deduplication across blocks such that Dropbox’s Pocket storage system does.

https://www.maestral.app/

Google docs

The software and hardware in an electric car.

Almost any firmware project.

AutoCAD

Spotify